package cmmui;  
import javax.swing.*;  
import java.awt.*;  
import java.awt.event.*;  
import java.awt.geom.AffineTransform;  
import java.util.ArrayList;  
import java.util.HashMap;  
/**  
* A JTabbedPane which has a close ('X') icon on each tab.  
* To add a tab, use the method addTab(String, Component)  
* To have an extra icon on each tab (e.g. like in JBuilder,  
* showing the file type) use the method  
* addTab(String, Component, Icon).  
* Only clicking the 'X' closes the tab. */  
public class TabbedPaneUI extends JTabbedPane implements MouseListener {  
    private double scaleRatio = 0.3;  
    private HashMap<String, Component> maps = new HashMap<String, Component>();  
    public TabbedPaneUI() {  
        super();  
        addMouseListener(this);  
    }  
    public void addTab(String title, Component component) {  
        this.addTab(title, component, null);  
    }  
    public void addTab(String title, Component component, Icon extraIcon) {  
        super.addTab(title, new CloseTabIcon(extraIcon), component);  
    }  
    public void insertTab(String title, Icon icon, Component component, String tip, int index) {  
        tip = "tab" + component.hashCode();  
        maps.put(tip, component);  
        super.insertTab(title, icon, component, tip, index);  
    }  
    public void removeTabAt(int index) {  
        Component component = getComponentAt(index);  
        maps.remove("tab" + component.hashCode());  
        super.removeTabAt(index);  
    }  
    public JToolTip createToolTip() {  
        ImageToolTip tooltip = new ImageToolTip();  
        tooltip.setComponent(this);  
        return tooltip;  
    }  
    class ImageToolTip extends JToolTip {  
        public Dimension getPreferredSize() {  
            String tip = getTipText();  
            Component component = maps.get(tip);  
            if (component != null) {  
                return new Dimension((int) (getScaleRatio() * component.getWidth()), (int) (getScaleRatio() * component.getHeight()));  
            } else {  
                return super.getPreferredSize();  
            }  
        }  
        public void paintComponent(Graphics g) {  
            String tip = getTipText();  
            Component component = maps.get(tip);  
            if (component instanceof JComponent) {  
                JComponent jcomponent = (JComponent) component;  
                Graphics2D g2d = (Graphics2D) g;  
                AffineTransform at = g2d.getTransform();  
                g2d.transform(AffineTransform.getScaleInstance(getScaleRatio(), getScaleRatio()));  
                ArrayList<JComponent> dbcomponents = new ArrayList<JComponent>();  
                updateDoubleBuffered(jcomponent, dbcomponents);  
                jcomponent.paint(g);  
                resetDoubleBuffered(dbcomponents);  
                g2d.setTransform(at);  
            }  
        }  
        private void updateDoubleBuffered(JComponent component, ArrayList<JComponent> dbcomponents) {  
            if (component.isDoubleBuffered()) {  
                dbcomponents.add(component);  
                component.setDoubleBuffered(false);  
            }  
            for (int i = 0; i < component.getComponentCount(); i++) {  
                Component c = component.getComponent(i);  
                if (c instanceof JComponent) {  
                    updateDoubleBuffered((JComponent) c, dbcomponents);  
                }  
            }  
        }  
        private void resetDoubleBuffered(ArrayList<JComponent> dbcomponents) {  
            for (JComponent component : dbcomponents) {  
                component.setDoubleBuffered(true);  
            }  
        }  
    }  
    public double getScaleRatio() {  
        return scaleRatio;  
    }  
    public void setScaleRatio(double scaleRatio) {  
        this.scaleRatio = scaleRatio;  
    }  
    public void mouseClicked(MouseEvent e) {  
        int tabNumber = getUI().tabForCoordinate(this, e.getX(), e.getY());  
        if (tabNumber < 0) {  
            return;  
        }  
        Rectangle rect = ((CloseTabIcon) getIconAt(tabNumber)).getBounds();  
        if (rect.contains(e.getX(), e.getY())) {  
            //the tab is being closed  
            this.removeTabAt(tabNumber);  
        }  
    }  
    public void mouseEntered(MouseEvent e) {  
    }  
    public void mouseExited(MouseEvent e) {  
    }  
    public void mousePressed(MouseEvent e) {  
    }  
    public void mouseReleased(MouseEvent e) {  
    }  
}  
/**  
* The class which generates the 'X' icon for the tabs. The constructor  
* accepts an icon which is extra to the 'X' icon, so you can have tabs  
* like in JBuilder. This value is null if no extra icon is required.  
*/  
class CloseTabIcon implements Icon {  
    private int x_pos;  
    private int y_pos;  
    private int width;  
    private int height;  
    private Icon fileIcon;  
    public CloseTabIcon(Icon fileIcon) {  
        this.fileIcon = fileIcon;  
        width = 16;  
        height = 16;  
    }  
    public void paintIcon(Component c, Graphics g, int x, int y) {  
        this.x_pos = x;  
        this.y_pos = y;  
        Color col = g.getColor();  
        g.setColor(Color.black);  
        int y_p = y + 2;  
        g.drawLine(x + 1, y_p, x + 12, y_p);  
        g.drawLine(x + 1, y_p + 13, x + 12, y_p + 13);  
        g.drawLine(x, y_p + 1, x, y_p + 12);  
        g.drawLine(x + 13, y_p + 1, x + 13, y_p + 12);  
        g.drawLine(x + 3, y_p + 3, x + 10, y_p + 10);  
        g.drawLine(x + 3, y_p + 4, x + 9, y_p + 10);  
        g.drawLine(x + 4, y_p + 3, x + 10, y_p + 9);  
        g.drawLine(x + 10, y_p + 3, x + 3, y_p + 10);  
        g.drawLine(x + 10, y_p + 4, x + 4, y_p + 10);  
        g.drawLine(x + 9, y_p + 3, x + 3, y_p + 9);  
        g.setColor(col);  
        if (fileIcon != null) {  
            fileIcon.paintIcon(c, g, x + width, y_p);  
        }  
    }  
    public int getIconWidth() {  
        return width + (fileIcon != null ? fileIcon.getIconWidth() : 0);  
    }  
    public int getIconHeight() {  
        return height;  
    }  
    public Rectangle getBounds() {  
        return new Rectangle(x_pos, y_pos, width, height);  
    }  
    /*public static void main(String args[]) {  
    try {  
    UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());  
    }  
    catch (Exception e) {  
    e.printStackTrace();  
    }  
    JClosableTabbedPane pane = new JClosableTabbedPane();  
    ImageIcon icon = new ImageIcon("images/middle.jpg");  
    pane.addTab("tab1",new JButton("first Button"),icon);  
    pane.addTab("tab2",new JButton("sec Button"),icon);  
    pane.addTab("tab3",new JButton("third Button"),icon);  
    pane.addTab("tab4",new JButton("fourth Button"),icon);  
    JFrame frame = new JFrame("Demo");  
    frame.getContentPane().add(pane,BorderLayout.CENTER);  
    frame.setSize(500,300);  
    frame.setLocation(300,200);  
    frame.show();  
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
    }*/  
}  